Instant: Use only one hidden WebContents per profile.

chrome/browser/ui/views/omnibox/omnibox_view_win.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/omnibox/omnibox_view_win.h"
 
 #include <algorithm>
 #include <locale>
 #include <string>
 
@@ skipping 279 matching lines @@
     }
     edit_->SetDropHighlightPosition(drop_position);
   }
 }
 
 void OmniboxViewWin::EditDropTarget::ResetDropHighlights() {
   if (drag_has_string_)
     edit_->SetDropHighlightPosition(-1);
 }
 
-
 ///////////////////////////////////////////////////////////////////////////////
 // Helper classes
 
 OmniboxViewWin::ScopedFreeze::ScopedFreeze(OmniboxViewWin* edit,
                                            ITextDocument* text_object_model)
     : edit_(edit),
       text_object_model_(text_object_model) {
   // Freeze the screen.
   if (text_object_model_) {
     long count;
@@ skipping 1200 matching lines @@
   ScopedFreeze freeze(this, GetTextObjectModel());
   OnBeforePossibleChange();
   LRESULT result = DefWindowProc(message, wparam, lparam);
   // Force an IME composition confirmation operation to trigger the text_changed
   // code in OnAfterPossibleChange(), even if identical contents are confirmed,
   // to make sure the model can update its internal states correctly.
   OnAfterPossibleChangeInternal((lparam & GCS_RESULTSTR) != 0);
   return result;
 }
 
-
 LRESULT OmniboxViewWin::OnImeEndComposition(UINT message, WPARAM wparam,
                                             LPARAM lparam) {
   // The edit control auto-clears the selection on WM_IME_ENDCOMPOSITION, which
   // means any inline autocompletion we were showing will no longer be
   // selected, and therefore no longer replaced by further user typing.  To
   // avoid this we manually restore the original selection after the edit
   // handles the message.
   CHARRANGE range;
   GetSel(range);
   LRESULT result = DefWindowProc(message, wparam, lparam);
@@ skipping 211 matching lines @@
   // double_click_time_ from the current message's time even if the timer has
   // wrapped in between.
   const bool is_triple_click = tracking_double_click_ &&
       views::NativeTextfieldWin::IsDoubleClick(double_click_point_, point,
           GetCurrentMessage()->time - double_click_time_);
   tracking_double_click_ = false;
 
   if (!gaining_focus_.get() && !is_triple_click)
     OnPossibleDrag(point);
 
-
   // Modifying the selection counts as accepting any inline autocompletion, so
   // track "changes" made by clicking the mouse button.
   ScopedFreeze freeze(this, GetTextObjectModel());
   OnBeforePossibleChange();
   DefWindowProc(WM_LBUTTONDOWN, keys,
                 MAKELPARAM(ClipXCoordToVisibleText(point.x, is_triple_click),
                            point.y));
   OnAfterPossibleChange();
 
   gaining_focus_.reset();
@@ skipping 691 matching lines @@
   // should emphasize.  To check for a URL, rather than using the type returned
   // by Parse(), ask the model, which will check the desired page transition for
   // this input.  This can tell us whether an UNKNOWN input string is going to
   // be treated as a search or a navigation, and is the same method the Paste
   // And Go system uses.
   url_parse::Component scheme, host;
   AutocompleteInput::ParseForEmphasizeComponents(
       GetText(), model()->GetDesiredTLD(), &scheme, &host);
   const bool emphasize = model()->CurrentTextIsURL() && (host.len > 0);
 
-  bool instant_extended_api_enabled =
-      chrome::search::IsInstantExtendedAPIEnabled(parent_view_->profile());
-
   // Set the baseline emphasis.
   CHARFORMAT cf = {0};
   cf.dwMask = CFM_COLOR;
   // If we're going to emphasize parts of the text, then the baseline state
   // should be "de-emphasized".  If not, then everything should be rendered in
   // the standard text color.
   cf.crTextColor = skia::SkColorToCOLORREF(parent_view_->GetColor(
       security_level_,
       emphasize ? LocationBarView::DEEMPHASIZED_TEXT : LocationBarView::TEXT));
   // NOTE: Don't use SetDefaultCharFormat() instead of the below; that sets the
@@ skipping 104 matching lines @@
   // Calculate the selection rectangle in canvas coordinates, which we'll use
   // to clip the stroke so we can draw the unselected and selected portions.
   CHARRANGE sel;
   GetSel(sel);
   const SkRect selection_rect = {
       SkIntToScalar(PosFromChar(sel.cpMin).x - scheme_rect.left),
       SkIntToScalar(0),
       SkIntToScalar(PosFromChar(sel.cpMax).x - scheme_rect.left),
       SkIntToScalar(scheme_rect.Height()) };
 
-  bool instant_extended_api_enabled =
-      chrome::search::IsInstantExtendedAPIEnabled(parent_view_->profile());
-
   // Draw the unselected portion of the stroke.
   sk_canvas->save();
   if (selection_rect.isEmpty() ||
       sk_canvas->clipRect(selection_rect, SkRegion::kDifference_Op)) {
     paint.setColor(parent_view_->GetColor(security_level_,
                                           LocationBarView::SECURITY_TEXT));
     sk_canvas->drawLine(start_point.fX, start_point.fY,
                         end_point.fX, end_point.fY, paint);
   }
   sk_canvas->restore();
@@ skipping 242 matching lines @@
   return (rect.left - client_rect.left) + (client_rect.right - rect.right);
 }
 
 int OmniboxViewWin::WidthNeededToDisplay(const string16& text) const {
   // Use font_.GetStringWidth() instead of
   // PosFromChar(location_entry_->GetTextLength()) because PosFromChar() is
   // apparently buggy. In both LTR UI and RTL UI with left-to-right layout,
   // PosFromChar(i) might return 0 when i is greater than 1.
   return font_.GetStringWidth(text) + GetHorizontalMargin();
 }